Prishe and Selh'teus will fight with you. Among other abilities, they can heal themselves but Prishe, and only Prishe, can be healed by the party as well. If she's K.O.'d, it is possible to cast Raise on her and she will go back to fighting with full HP. She can't be healed using Curing Waltz.

Since Selh'teus cannot be healed by the party, just letting them do the fight will not work because if Selh'teus is defeated, the fight will be over.

In addition to this, if the entire party is K.O.'d at any point during the fight, they will be immediately removed from the battlefield. The game will not allow the usual 3 minutes for someone to get back up like it typically does in other battlefields. Thus at least one member has to be conscious at all times for the battle to go on.

Promathia has two forms. There is an opportunity to recover after beating the first form, but on both forms eventually Prishe will engage and start the fight on her own.

Promathia is immune to the spell Stun, and either immune or extremely resistant to all Dark elemental spells such as Aspir. Head Butt also seems to do little-to nothing as far as stuns. I believe Promathia is just completely immune to the stun effect, except from Selh'teus.

Upon defeating Promathia's second form, every conscious party member (including those doing it for the first time) will receive 2000 Experience Points or Limit Points. The party will appear outside in Al'Taieu and receive the title: Averter of the Apocalypse

First form

Promathia's first form has about 8,000 HP. It uses the following special attacks:

Do note that retrieving an item with a reuse-timer from an Event Item Storer will result in a reset of the timer to its maximum amount. In other words, these can not be used before 20 hours has passed from retrieving it.

These are the official conditions stated by Square-Enix. However, many people still find themselves unable to obtain the Trust spells even with these conditions met. In that case, complete Apocalypse Nigh and you are guaranteed to be able to receive both Trust: Prishe and Trust: Ulmia.

Prishe makes references to the following quests if you have completed them:

These are the official conditions stated by Square-Enix. However, many people still find themselves unable to obtain the Trust spells even with these conditions met. In that case, complete Apocalypse Nigh and you are guaranteed to be able to receive both Trust: Prishe and Trust: Ulmia.

Ulmia makes references to the following quests if you have completed them:

Apocalypse Nigh: "When I sang the Lay of the Immortals before the fifth crystal..."